Mythos
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Gen 2 Hayabusa Rear Wheel Removal
The service manual recommends loosening the rear axle adjuster lock nuts and adjuster bolts. If you do this, you will need to adjust the drive chain to the proper tension after reinstalling the wheel. It is not necessary to loosen the adjuster screws or locknuts to remove the rear wheel.
Be careful with rotors. Lean the wheels against a wall when they are removed or place them on a wheel stand. Do not lay the wheels on the ground or let them bump against objects.
The rear sprocket carrier is pressure fit to the cush drive in the rear wheel hub. Be careful that the sprocket carrier does not fall out of the cush drive. Never lift the rear wheel by the sprocket or the sprocket carrier may slip out allowing the wheel to fall. If the cush drive is loose, inspect it and determine if you need to change the rubbers before reinstalling the wheel (see Rear Wheel Inspection, steps 1 through 5).
The cush drive on my rear wheel did not fit tight the first time I took the wheel off.
The axles are often very tight from the factory. You may wish to follow the procedures for loosening the rear axle nut, front axle pinch bolts and front axle bolt before putting the bike up on stands. With the bike on its side stand, it may be less apt to be levered over with heavy torqueing. Be aware that the side stand can fold closed however. Be very cautious of a tip over any time you loosen the axles whether on a stand or the side stand.
Tools:
front a rear stands
Telephone books
Sharpie marker
36mm axle nut socket
24” breaker bar
rag
wire
tape
high temp axle grease
rubber mallet
Torque wrenches
Rear Wheel Removal
Do Ahead:
Remove the Rear brake caliper. (see Brake Caliper Removal, steps 1 through 5).
1. Lift the bike on front a rear stand. If the front tire will be removed, lift the front on a front stand now as well. A fork lift stand will work better for front wheel removal than a steering stem stand.
Place Telephone books under the wheel so that the wheel will be supported as the axle is removed. Notice there are books stacked in front of the wheel as well as in back.
2. Use a Sharpiemarker to mark a drive chain link to the tooth it is engaged with.
Marking the chain link to the sprocket tooth will allow the chain to be reinstalled so that it follows the established wear pattern.
3. Use a 36mm axle nut socketand a 24” breaker barto remove the rear axle nut. Remove the washer and the righthand adjuster block.
4. Press the rear axle through the swingarm, rear brake caliper bracket and wheel bearings while lifting up on the rear wheel. Do not force the axle if it binds, rather shift the alignment the parts so the axle slides through smoothly.
5. Pull the rear axle out of the left side of the swingarm while lifting up on the rear wheel. Remove the left hand axle adjuster block.
6. Wrap a rag around the swingarm brace. Twist a piece of wire around it to secure the drive chain when it is removed from the sprocket.
Push the wheel as far as it will go forward until it hits the front inside of the swingarm. Lift the chain off of the rear sprocket being careful to not let it fall off of the front sprocket.
7. Tie the chain to the swingarm with the wire so that the chain is supported off of the ground and cannot fall off of the front sprocket.
8. Pull the rear wheel out along with the rear brake caliper bracket. Be careful not to drop the bracket as it slides out of the groove it is engaged with inside the swingarm.
Be careful that the sprocket carrier does not fall out of the wheel hub if the cush drive is loose.
9. Remove the collar from the sprocket side of the rear wheel and use a Sharpie to mark the side that faces out.
It seems as though the collar can be installed with either side facing out but I mark mine so that it can be reinstalled exactly the way it always has been.
If the sprocket carrier fits loosely in the cush drive, it could fall out. You may want to remove the sprocket carrier or tapeit around the wheel hub to prevent this. If the sprocket carrier comes out, be careful to prevent the retainer tube inside from falling out of it. You also may consider replacing the cush drive rubbers if they are worn out (see Rear Wheel Inspection, steps 1 through 5).
11. Remove the spacer from the rotor side of the rear wheel.
Rear Wheel Installation
12. Install the collar to the sprocket side of the wheel and the spacer to the rotor side of the wheel as they were marked.
Clean away any sand or dirt that may be present onthe swing arm slots.
13. Place books under the rear wheel to raise the rear wheel to the proper height as shown in step 1 of this tutorial. The correct height will be different if the tire was changed.
Roll the wheel so that the collar is flush to the LH inside of the swingarm.
Observe the location of the groove in he swingarm that mates to the rear brake caliper mount spline.
Roll the rear wheel forward while pushing the rear brake caliper mount with it. Mate the rear brake caliper mount spline to the slot in the swingarm.
14. Visually align the path of the axle through the swingarmand the wheel hub.
15. Roll the wheel all the way forward in the swingarm and install the drive chain to the rear sprocket as marked in step 2 of this tutorial.
16. Remove any grit or sand from the threads of the rear axle and install the LH axle adjuster block to the rear axle.
Apply a high temp axle greaseto the rear axle on the area that will pass through the wheel hub.
17. Push the rear axle into the LH side of the swingarm slot. It will probably not go all the way through but do not force it. Shift the wheel in the swingarm or lift the wheel slightly so the parts align. I also believe the middle of the axle hole drops down under gravity causing some obstruction. Have patients and press the axle through with just a little pressure applied to it.
18. Install the RH axle adjuster block to the swingarm.
Install the washer and thread the axle nut onto the rear axle finger tight.
19. Use a rubber malletor your fist to thump the rear wheel in tight against the axle adjuster blocks.
20. Use a 36mm axle nut socket to torquethe rear axle nut.
Rear Axle Nut, Torque: 72.5 ft lbs
Install Rear Brake Caliper(see steps 6 through 13, Rear Brake Caliper Removal).
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